<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/vue.js"></script>
		<title>demo 2-24</title>
	</head>
	<body>
	</body>
	<script>
		let arrayLike = {
			'0':'a',
			'1':'b',
			'2':'c',
			length:3
		};
		var arr1 = [].slice.call(arrayLike);
		let arr2 = Array.from(arrayLike);
	</script>
</html>